Skin aging process is very complex and can be classified as intrinsic aging, primarily determined by genetic factors, and extrinsic aging, induced by nutritional and behavioral factors, such as chronic exposure to ultraviolet radiation, excessive alcohol consumption, smoking and nutritional disorders. Skin aging is characterized by morphological and functional changes, which can cause wrinkling, scaling, dryness, pigmentation abnormalities and skin cancer. Some of the disorders that affect the skin aging are mainly due to oxidative stress promoted by reactive oxygen species that are able to change the balance between synthesis and degradation of the dermal extracellular matrix components, favoring degradation rather than the synthesis process. Natural products protect skin from damage induced by oxidative stress and may act in important pathways in the skin aging. Among the possible sources for obtaining natural products it is possible to highlight the endophytic fungi, which are able to produce a great diversity of natural compounds. The objective of this study was to evaluate the influence of treatment with metabolites produced by two endophytic fungi isolated from Bauhinia variegate leaves on genic expression of collagen type I, metalloproteinase type 1 and tissue inhibitor of metalloproteinase type 1 in human dermal fibroblasts exposed to oxidative stress. The results show that both fungi were able to produce polyphenolic compounds and, more specifically, flavonoids. Treatment of fibroblasts with the extract produced by one of the endophytic fungi increased the expression of collagen type I gene, reduced the expression of metalloproteinase type 1 gene and inhibited metalloproteinase type 2 activity, suggesting that metabolites produced by this fungus can be benefic in prevent skin aging.